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Harken 57mm ESP Forkhead Block with a high-strength axle for high static loads.
Designed to handle the high loads generated by modern racing and cruising boats, ESP blocks feature sleeve bearings to ensure smooth, hitch-free performance under high load and heavy winds. Simple design and construction for handling high static loads on cruising boats. Ideal for halyards or limited purchase systems on cruising boats. Aluminum or polished stainless steel.
- Carbon-black Torlon ball bearings
- Long-glass engineered plastic Sheave
- Contained-axle sleeve
- Sheave Diameter: 2 1/4" (57 mm)
- Max. Line Diameter: 3/8" (10 mm)
- Max. Working Load (MWL): 1650 lb. (748 kg)
- Breaking Load: 3300 lb. (1496 kg)
- Weight: 4.5 oz. (129 g)
- Length: 4 1/2" (114 mm)
This article will help you prepare for passage making that is both safe and fun.
By Chuck Hawley and Tom Burden, Last updated 6/14/2019
This article reminds us to never exceed a fitting's Maximum Working Load (MWL) and provides a few points to consider when selecting blocks.
By Tom Burden, Last updated: 10/28/2019